I had arrhythmia before but would be for a half an our once or while , haven't had for a very long time after taking CoQ10. but after 6 weeks of a cycle mostly with pure TRT 500mg /week and for the last 2 weeks introduced 300 mg of Deca, my arrhythmia is back and it fires something like every 30 min for the last 3 days. My pressure is around 140. Would that go away if I stop? had anyone experimented similar problem?